Family name 爱金 (爱金 
, Aijin 
) , all around the world, is quite a rare surname. The surname 爱金 is habitual in China, where it is a rare surname, Australia, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in China, Australia, and India. More frequently, 爱金 is the forename as well as the last name.